The Remote Serial Monitor is a handy tool to help you debug the MEGA65 System.

Documentation exists for it in the following locations:

• C65GS System Notes
  • See the “4.3 Remote Serial Monitor (handy for debugging)” section
• https://github.com/Ben-401/c65gs/blob/dockit/doc/monitor.md
  • Some extra usage info exists in this page of Ben's fork of the github repo
• Typing “?” within the monitor (via your terminal app) to see a list of slightly outdated commands

I'm currently developing a comms tool to enhance debugging support for the mega65.

It's still early days, but some present perks are:

• It preserves the history of past commands typed (via the readline library, eg, you can use CTRL-R to do a reverse search through past commands)
• Pressing 'ENTER' key will repeat the last command (handy when using the 'M' command to dump out consecutive chunks of memory)
• Can disassemble the code at the current pc as you step through
• If you ran the app in the path containing the *.list files for your project (and your *.list files were generated via a newly-tweaked version of Ophis that provided more verbose output in .list files), then you will also see the .a65 source-code line as you step through

The source for the m65dbg app is available here:

• https://github.com/gurcei/m65dbg